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Chd|====================================================================
Chd|  HM_READ_UPWIND                source/general_controls/computation/hm_read_upwind.F
Chd|-- called by -----------
Chd|        CONTRL                        source/starter/contrl.F       
Chd|-- calls ---------------
Chd|        ANCMSG                        source/output/message/message.F
Chd|        HM_GET_FLOATV                 source/devtools/hm_reader/hm_get_floatv.F
Chd|        HM_OPTION_COUNT               source/devtools/hm_reader/hm_option_count.F
Chd|        HM_OPTION_NEXT                source/devtools/hm_reader/hm_option_next.F
Chd|        HM_OPTION_START               source/devtools/hm_reader/hm_option_start.F
Chd|        HM_OPTION_READ_MOD            share/modules1/hm_option_read_mod.F
Chd|        MESSAGE_MOD                   share/message_module/message_mod.F
Chd|        SUBMODEL_MOD                  share/modules1/submodel_mod.F 
Chd|====================================================================
      SUBROUTINE HM_READ_UPWIND(JUPW, ETA1, ETA2, ETA3, LSUBMODEL, UNITAB)
C-----------------------------------------------
C   M o d u l e s
C-----------------------------------------------
      USE UNITAB_MOD
      USE HM_OPTION_READ_MOD
      USE SUBMODEL_MOD
      USE MESSAGE_MOD
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER, INTENT(INOUT) :: JUPW
      my_real, INTENT(INOUT) :: ETA1, ETA2, ETA3
      TYPE(SUBMODEL_DATA), DIMENSION(NSUBMOD), INTENT(IN) :: LSUBMODEL
      TYPE(UNIT_TYPE_), INTENT(IN) :: UNITAB
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER :: NUPWIND
      LOGICAL :: IS_AVAILABLE

      JUPW = 0
      ETA1 = ONE
      ETA2 = ONE
      ETA3 = ONE
      
      CALL HM_OPTION_COUNT('/UPWIND', NUPWIND)
      
      IF (NUPWIND > 0) THEN
         CALL HM_OPTION_START('/UPWIND')
         CALL HM_OPTION_NEXT()
         JUPW = 1
         CALL HM_GET_FLOATV('ENG_UPWIND_eta1', ETA1, IS_AVAILABLE, LSUBMODEL, UNITAB)
         CALL HM_GET_FLOATV('ENG_UPWIND_eta2', ETA2, IS_AVAILABLE, LSUBMODEL, UNITAB)
         CALL HM_GET_FLOATV('ENG_UPWIND_eta3', ETA3, IS_AVAILABLE, LSUBMODEL, UNITAB)
         IF (ETA1 == ZERO) ETA1 = ONE
         IF (ETA2 == ZERO) ETA2 = ONE
         IF (ETA3 == ZERO) ETA3 = ONE
         
         IF (ETA3 /= ONE) THEN
            CALL ANCMSG(MSGID = 1628, MSGTYPE = MSGWARNING, ANMODE = ANINFO)
         ENDIF
      ENDIF
      END SUBROUTINE HM_READ_UPWIND
